Robust H2 filtering of linear systems with time delays

E. Fridman*, U. Shaked, L. Xie

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


The problem of robust H2 estimation of a combination of state variables of a stationary linear system with time delays is considered. Since the problem is infinite dimensional in nature, an attempt is being made to develop finite dimensional methods that will guarantee a preassigned estimation accuracy. The approach of minimizing the trace of a matrix that overbounds the exact covariance of the estimation error is considered. Sufficient conditions are given in the form of linear matrix inequalities (LMIs). The results are illustrated by a numerical example.

Original languageEnglish
Pages (from-to)3877-3882
Number of pages6
JournalProceedings of the IEEE Conference on Decision and Control
StatePublished - 2002
Event41st IEEE Conference on Decision and Control - Las Vegas, NV, United States
Duration: 10 Dec 200213 Dec 2002


  • Delay-dependent criteria
  • LMI
  • Robust H-filtering
  • Time-delay systems


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